Identification of Rickettsia felis in the salivary glands of cat fleas
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作者:
Macaluso, Kevin R.
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Louisiana State Univ, Sch Vet Med, Dept Pathobiol Sci, Baton Rouge, LA 70803 USALouisiana State Univ, Sch Vet Med, Dept Pathobiol Sci, Baton Rouge, LA 70803 USA
Macaluso, Kevin R.
[1
]
Pornwiroon, Walairat
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Louisiana State Univ, Sch Vet Med, Dept Pathobiol Sci, Baton Rouge, LA 70803 USALouisiana State Univ, Sch Vet Med, Dept Pathobiol Sci, Baton Rouge, LA 70803 USA
Pornwiroon, Walairat
[1
]
Popov, Vsevolod L.
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Univ Texas Galveston, Dept Pathol, WHO Collaborating Ctr Trop Dis, Med Branch, Galveston, TX USALouisiana State Univ, Sch Vet Med, Dept Pathobiol Sci, Baton Rouge, LA 70803 USA
Popov, Vsevolod L.
[2
]
Foil, Lane D.
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Louisiana State Univ, Dept Entomol, Baton Rouge, LA 70803 USALouisiana State Univ, Sch Vet Med, Dept Pathobiol Sci, Baton Rouge, LA 70803 USA
Foil, Lane D.
[3
]
机构:
[1] Louisiana State Univ, Sch Vet Med, Dept Pathobiol Sci, Baton Rouge, LA 70803 USA
[2] Univ Texas Galveston, Dept Pathol, WHO Collaborating Ctr Trop Dis, Med Branch, Galveston, TX USA
[3] Louisiana State Univ, Dept Entomol, Baton Rouge, LA 70803 USA
Rickettsia felis, a flea-associated rickettsial pathogen, has been identified in many tissues, including the digestive and reproductive tissues, within the cat flea, Ctenocephalides felis. We utilized transmission electron microscopy and polymerase chain reaction to identify R. felis in the salivary glands of fed fleas and further define the distribution of R. felis within the arthropod host. We identified Rickettsia-like organisms in salivary glands using electron microscopy. Sequence analysis of portions of the Rickettsia genus-specific 17-kDa antigen gene and R. felis plasmid confirmed the morphological identification of R. felis in cat flea salivary glands. This is the first report of R. felis in tissues critical for horizontal transmissions of rickettsiae.